Free Online Calculators

Work out your monthly loan EMI and total interest in seconds.

Estimate monthly mortgage payments with your down payment.

See how your savings grow year by year with compounding.

Estimate your take-home pay after US or UK taxes.

Split the bill and tip fairly between everyone.

Percent of a number, increases and decreases — instantly.

Check your Body Mass Index and weight category.

Find your daily calorie needs for your activity level.

Your exact age in years, months and days.

Days between two dates, or add and subtract days.

Calculate your grade point average from course grades.

Estimate body fat % with the Navy tape method plus BMI cross-check.

Turn your calories into protein, carb and fat targets.

Estimate your 1RM and get training percentages.

Find your 5 training zones with the Karvonen method.

Add, subtract, multiply, divide and simplify fractions.

Exact age in years, months, days — plus next birthday.

Mean, median, mode, SD and variance with a chart.

Trig, logs, powers — with history tape and keyboard.

Credit-weighted GPA plus a target planner.

Solve ax2 + bx + c with graph and steps.

Celsius, Fahrenheit, Kelvin and more.

Meters, feet, miles, inches and more.

Kg, grams, pounds, ounces, stone.

Liters, gallons, cups, fl oz and more.

km/h, mph, m/s, knots and more.

m², acres, hectares, sq ft and more.

Days between dates, add/subtract, days from today.

Hours and minutes between two times.

Add up hours and minutes, payroll decimals.

Live countdown with shareable link.

Working days minus weekends and holidays.

Cups to grams with ingredient densities.

Scale any recipe up or down.

°F, °C, gas mark and fan adjust.

Perfect roast times and temps.

Swap baking pan sizes safely.

Oven settings to air fryer.

Yards, bags, waste % and cost.

Gallons for any room + cost.

Tons and yards by material.

Tiles, boxes, waste % and cost.

Panels, screws, mud + cost.

Board feet + cost per bf.

Solve from any two values.

Units and revenue to break even.

ROI % + ad ROAS mode.

Sale prices forward/reverse.

Tax forward/reverse + presets.

What you need on the final.

Grade from weighted categories.

% and letter from correct/total.

Reading/speaking time + pages.

Range, count, no-repeats.

Strong passwords + entropy.

Words, chars, sentences live.

HEX/RGB/HSL two-way.

Trip cost + per-person split.